| 1. | Fueguino volcanic rocks also include adakites but these are richer in magnesium.
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| 2. | This is most likely an indication of volcanic rock underneath the surface.
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| 3. | The hospital sits upon a small rocky rise of black volcanic rock.
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| 4. | These volcanic rocks are distributed along splays of the Sorong Fault system.
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| 5. | The bathroom is 40 feet from the house, surrounded by volcanic rock.
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| 6. | It is a hydrothermal mineral occurring in volcanic rocks such as basalt.
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| 7. | It is close to a range of small hill of volcanic rocks.
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| 8. | On the plane back, many women wore necklaces of polished volcanic rock.
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| 9. | The bedrock consists of basement gneiss with occasional slate and volcanic rock.
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| 10. | The peripheral area of the lake is strewn with black volcanic rocks.
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